Task assignment is one of the key technologies of workflow management.We analyzed the current academic researches and workflow products,found that the description of task assignment is very weak.We provide a new rule-based workflow task assignment description model to promote the expressing power,flexibility,and ease of use.The key features of the task assignment model are business rule based and using bidirectional navigation in the organization model and the workflow model.Especially,the organization model is very close to the actual business environment,not just the roles and employees.

电子战是指交战双方利用电子设备围绕争夺制电磁权而进行的斗争.在现代战争中,电子战不仅是一种作战保障手段,而且更是一种重要作战手段,它直接关系到战争胜负.本文主要介绍了电子战在现代战争中的作用以及预测在未来几年内电子战的发展趋势及技术上的特点.